To increase your license capacity to pay additional employees, follow the steps below:
Go to File, Company Details, and click Change Company Details.
Click Next.
Change option to Change Licence Details.
On the Information page, tick the box I have read and understand the above information.
Click Next.
On the Company Licensing Details page, tick the box to confirm The above Company details are correct.
Click Next.
In the Active Employees Licensing Details page, use the arrows in Licensed for ? Active Employees field to increase or decrease your employee limits.
Tick the box The above licensing details are correct.
Click Next.
DO NOT tick the box Don't print the Company Registration Form.
Click Next.
When the print option appears, save the form as a PDF
Then raise a case online, refer to this article, and attach the PDF that was previously saved in step 13.