If you want to add a customer group to allow or disallow to request quotes to all products, you can use this update script as a starting point.
NOTE: berfore altering your database, create a proper backup of your database! Always test this script on a development server before using on a live site.
This is a base script, serving as a starting point to create your own script. We can NOT guarantee this script will work flawlessly on every installation!!
Create a customer group (Customers => Customer groups)
Find the table 'core_resource' and search for 'qquoteadv_setup' and write down the version number
Find in table 'customer_group' the 'customer_group_id'
Open the attached file and replace the 'customer_group_id' with your 'customer_group_id'. Other variables can be adjusted as needed.
CREATE BACKUP OF YOUR DATABASE! Place the file in the folder:
Make sure the name of the file is correct for updating the database. Adjust the ../etc/config.xml version number to match you file update number.
Run a page.
The table 'quoteadv_group_allow' should be updated with all the products. If something went wrong, replace the table with the original table and reset the 'core_resource' number to it's original state and try again.
If multiple customer groups need to be added, change the customer group_id and run the script again.