A member cannot belong to more than 1 membership. Instead, you can setup so each membership has different content.
Then make the membership that the member upgrades to include all the content from the member's original membership.
You can do this by setting up content groups and attaching them to content.
A. Direct Payment - Add SolidTrust Pay button:
1- login to your solidtrust pay account
2- Go to my account -> view profile page
3- copy your username
3- Go to Merchant Zone -> Create Subscriptions
4- Click MEMBERS - view the items you are subscribed to
5- Copy your subscriotion Id
6- Paste both username and ID to your payment processors page
Only our Tool Truck software supports assigning a banner to a membership or content group. All banners must be assigned to a content group
in order for them to show. Content groups work like categories so if the banner is not in any content group it has no category that it shows under. Both content groups and banners can be assigned to memberships. If a content group is a assigned to a membership(s) then only those memberships the content group is assigned to are able to view the banner because only they can see the content group. If you also assign the banner itself to a membership then only the membership(s) you assign it to can see the banner IF they are also able to see one of the content groups the banner is assigned to (both criteria must be satisfied).
How to Assign a Banner to a Membership
To assign a banner to a specific membership go to /admin/managebanners.php and click edit icon next to the banner you want to assign to a specific membership.
Select a membership and then save changes.