Check out here Multivendor installation instructions by Purple Tree Software. Get to know more visit at - https://www.purpletreesoftware.com/

1. Installation Instructions
PURPLETREE MULTIVENDOR FOR OPENCART

2. Introduction
 Installation of this extension is same as any other
extension in opencart.
 We have tried to explain all the steps in this video to
make it easier for you.

3. Step 1
 After admin login, go to Extensions -> Installer
 Upload and install the *.ocmod.zip file
corresponding to your opencart version.

4. Step 2
 Go to Extensions -> Extensions -> Modules and click on "+" button for
following modules:
 Purpletree Multivendor Settings
 Purpletree Featured Stores
 Purpletree Seller Blog Setting
 Purpletree Seller Featured Products
 Purpletree Seller Panel
 Purpletree Sellers Latest Products

5. Step 3
 Go to Extensions -> Modifications
 Click on “Refresh Modifications” button on top right
corner of the page.

6. Step 4
 Go to System -> Users -> User Groups
 Click on the “Edit” button for Admin user group
(normally the group name is "Administrator").

7. Step 5
 Go to System -> Users -> User Groups
 Click on the “Edit” button for Admin user group (normally the
group name is "Administrator").
 Under "Access Permissions" and "Modify Permissions", click
on "Select All" link for permissions.
 Click the "Save" button on top right corner.

8. Step 6
 Go to Extensions -> Extensions -> Modules and click on "Edit"
button for the item "Purpletree Multivendor Settings".
 Set the "Status" field in the settings to "Enabled", and Click on "Get
License" button.
 Click on "Ok" to close the form, and click on "Save" button on top
right corner of the page.

9. Step 7
 Clear cache by going to "Dashboard", then clicking
on Gear icon on right side of the page, and then
refreshing all the cache.

10. Step 8
 Now you will see "Purpletree Multivendor" on the
left menu in admin.
 Click on "Settings" on left menu and set all options
as per your choice.

11. Step 9
 You can install other Purpletree modules also on
need basis, like “Featured Products”, “Latest
Products” etc.

12. Step 10
 Use the User Guide pdf for further configuration.
 Important: Please read the FAQ section in the user
guide before seeking support for any issue.

13. Thank you!