[Skip to main content](#vessel-content) # About groups of purchasing ## - **[griffin\_66](/forum/user/3745-griffin-66 "View griffin_66's Profile")** - [![griffin_66's Avatar](https://www.hikashop.com/media/kunena/core/svg/person.svg)](/forum/user/3745-griffin-66 "View griffin_66's Profile") Topic Author - [ Offline](/forum/user/3745-griffin-66) Less More - Posts: 8 - Thank you received: 0 - - 14 years 7 months ago [\#42641](#42641) by [griffin\_66](/forum/user/3745-griffin-66 "View griffin_66's Profile") *[About groups of purchasing](/forum/2-general-talk-about-hikashop/42641-about-groups-of-purchasing#42641 "Hi, I need to solve two problems: the groups of purchasing: the users require one product, and when we have the necessary number of orders, we open to all users the posibility for order..How can I set the reservation for the product, without payment? The second problem: I buy pre-paid cards. I can send to the buyer one code or coupon. At each purchase, I need to scale or recalculate the credit for my buyer. How can I do this? Thanks!!")* was created by *[griffin\_66](/forum/user/3745-griffin-66 "View griffin_66's Profile")* Hi, I need to solve two problems: the groups of purchasing: the users require one product, and when we have the necessary number of orders, we open to all users the posibility for order..How can I set the reservation for the product, without payment? The second problem: I buy pre-paid cards. I can send to the buyer one code or coupon. At each purchase, I need to scale or recalculate the credit for my buyer. How can I do this? Thanks!! Please [Log in](/login?return=aHR0cHM6Ly93d3cuaGlrYXNob3AuY29tL2ZvcnVtLzItZ2VuZXJhbC10YWxrLWFib3V0LWhpa2FzaG9wLzQyNjQxLWFib3V0LWdyb3Vwcy1vZi1wdXJjaGFzaW5nP3RtcGw9bWFya2Rvd24=) or [Create an account](/component/users/registration?Itemid=101) to join the conversation. - **[nicolas](/forum/user/63-nicolas "View nicolas's Profile")** - [![nicolas's Avatar](https://www.hikashop.com/media/kunena/avatars/resized/size144/users/avatar63.png)](/forum/user/63-nicolas "View nicolas's Profile") - [ Away](/forum/user/63-nicolas) Less More - Posts: 86292 - Thank you received: 14269 - - 14 years 7 months ago [\#42792](#42792) by [nicolas](/forum/user/63-nicolas "View nicolas's Profile") Replied by *[nicolas](/forum/user/63-nicolas "View nicolas's Profile")* on topic *[Re: About groups of purchasing](/forum/2-general-talk-about-hikashop/42641-about-groups-of-purchasing#42792 "Hi, I need to solve two problems: the groups of purchasing: the users require one product, and when we have the necessary number of orders, we open to all users the posibility for order..How can I set the reservation for the product, without payment? The second problem: I buy pre-paid cards. I can send to the buyer one code or coupon. At each purchase, I need to scale or recalculate the credit for my buyer. How can I do this? Thanks!!")* Hi, 1. That's not something possible with HikaShop. You want to use a groupon-like application like this one in order to do that: [ extensions.joomla.org/extensions/e-commerce/shopping-cart/17077](http://extensions.joomla.org/extensions/e-commerce/shopping-cart/17077) 2. You're talking about creating a plugin to add/remove points to the database where the credit of your users is stored ? In that case, you can read our developer documentation which explains the methods you can implement in order to do that: [ www.hikashop.com/en/support/documentatio...r-documentation.html](http://www.hikashop.com/en/support/documentation/62-hikashop-developer-documentation.html) Please [Log in](/login?return=aHR0cHM6Ly93d3cuaGlrYXNob3AuY29tL2ZvcnVtLzItZ2VuZXJhbC10YWxrLWFib3V0LWhpa2FzaG9wLzQyNjQxLWFib3V0LWdyb3Vwcy1vZi1wdXJjaGFzaW5nP3RtcGw9bWFya2Rvd24=) or [Create an account](/component/users/registration?Itemid=101) to join the conversation. 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