1. Go to Setup > Create > Objects and search for Quote/Proposal object.
  2. In the Custom Fields & Relationships related list, click New.
  3. From Step 1. Choose the field type, choose Formula as Data Type, and click Next.
  4. From Step 2. Choose the output type, enter the following details and click Next:
    1. In the Field Label field, enter Configure Products Partners.
    2. In the Field Name field, enter Configure_Products_Partners.
    3. Choose Text as Formula Return Type.

  5. In Step 3. Enter formula, paste the following URL under the Simple Formula tab and click Next:

    IF ( LEN( Apttus_QPConfig__PriceListId__c ) > 0 , HYPERLINK("/apex/Apttus_Config2__Cart businessObjectId="&Id&"&flow=PurchaseFlow", IMAGE("/resource/Apttus_QPConfig__Button_Configure", "Configure Products Partners"),"_self"), NULL)
    CODE

  6. In Step 4. Establish field-level security, select Field Level Security for the required profile and click Next. For example, Partner Community User Cloned.

  7. In Step 5. Add to page layouts, choose the page layouts on which you want to display this field.
  8. Click Save.
  9. Provide access of this field to the required profile. For example, Partner Community User Cloned.