The MultiCompany add-on allows you to set up unique record numbering for each company in one installation of a SuiteCRM instance.
Installation Guide SuiteCRM 8.x
Steps For Installing MultiCompany Plugin
Notes: Before installing MultiCompany Plugin, please take your SuiteCRM and Database backup first.
Step 1
To open the Administration Page, Click on the Admin tab, as shown in below screenshot.

Step 2
To install the MultiCompany Plugin, Click on the Module Loader from the Developer Tools section.

Step 3
In the Module Loader Page → Click on the Browse Button to select zip file → Click on UPLOAD Button to upload the MultiCompany Plugin(zip file).

Step 4
In the Module Loader Page → Click on INSTALL Button to install the MultiCompany Plugin.

Step 5
To accept the Terms and Conditions, click on the Accept Radio Button → Click on the COMMIT Button.

Step 6
After Successful Installation → It redirects you to validate License Key → enter valid License Key and click on VALIDATE Button → If key is valid then it will show CONTINUE Button → Click on the CONTINUE Button.

Step 7
Open Administration page, Click on the Repair from the System Section → Click on the Quick Repair and Rebuild.


Step 8
After Installation you can see the link “MultiCompany” on the Administration Page as shown in the below screenshot.

Download Core file Changes for MultiCompany (SuiteCRM-8.5)
Download Core file Changes for MultiCompany (SuiteCRM-8.6)
Download Core file Changes for MultiCompany (SuiteCRM-8.7)
Download Core file Changes for MultiCompany (SuiteCRM-8.8)
Download Core file Changes for MultiCompany (SuiteCRM-8.9)
Note :
Before modifying any core files, ensure that you create a complete backup of the original files. This helps prevent data loss or system issues in case something goes wrong.
When uninstalling the Multi Company plugin, ensure that all modifications made to the core files during the installation or configuration process are reverted to their original state.