1 You need to install License key by go to

My Company > licensing
https://www.bitdefender.com/business/support/en/77209-295101-licensing—provisioning.html

GravityZone Patch Management is 
Add-on and pay per endpoints

2 Config installation package to include Patch Management (if not it you need to manual install by each endpoint)

https://www.bitdefender.com/business/support/en/77209-157497-install-security-agents—standard-procedure.html#UUID-170effff-9632-b83c-a39e-73ced372a748_section-idm63238366396140

3 Create new maintenance window

https://www.bitdefender.com/business/support/en/77209-376316-patch-management.html

4 Assigning the maintenance window to a policy.

https://www.bitdefender.com/business/support/en/77209-342968-patch-management.html#UUID-c52eb700-05f8-896f-85ff-f9bfff28076d_UUID-7bddb64e-8b87-adcd-c78d-e518b6cfbce0

5 Run Patch Scan

1. Log in to GravityZone Control Center.
2. Go to the Network page from the left side menu.
3. Select the target endpoints.
4. Click the Actions button at the upper side of the table and select Patch scan. A confirmation window will appear.
5. Click Yes to confirm the scan task.When the task finishes, GravityZone adds in Patch Inventory all patches your software needs. For more details, refer to Patch Inventory.

https://www.bitdefender.com/business/support/en/77209-155238-patch-tasks.html#UUID-cbb6f70c-8ffa-43ed-a31c-be2e103505ae

6 Go to Patch Inventory to manage patch  

Manually install or uninstall features

1. Log in to GravityZone Control Center.
2. Go to the Network > Patch Inventory page from the left side menu.
3. Select the patches you want from the list and either install or uninstall them from your managed endpoints.

https://www.bitdefender.com/business/support/en/77209-155237-patch-inventory.html#UUID-39951589-a29d-59fa-ef50-07234110c354_section-idm123369542880172

7 Create Report

1. Log in to GravityZone Control Center.
2. Go to the Reports page from the left side menu.
3. Click the Add button in the upper left side of the page.
4. Select Network Patch Status.
5. Under the Select target section, select the endpoints you want to run the report on.
6. Click Save.

Supported vendors and products

This article provides comprehensive lists of vendors and products that are compatible with Bitdefender Patch Management for Windows, Linux (CentOS, RedHat, and SUSE), and macOS.

The Patch Management module supports a vast set of software products. In GravityZone Control Center you can view only the software products installed in your network, for which GravityZone provides patches.

The lists of supported vendors and products are available in CSV format, grouped by operating system:

• Windows
• CentOS
• RedHat Enterprise Linux
• SUSE Linux Enterprise
• macOS

Ref Link :

1: https://www.bitdefender.com/business/support/en/77209-376316-patch-management.html

2: https://www.bitdefender.com/business/support/en/77209-376352-bitdefender-patch-management-supported-vendors-and-products.html