Please refer to the below article for the Software package.
https://doc.sophos.com/central/Customer/help/en-us/ManageYourProducts/GlobalSettings/SoftwarePackages/index.html
Please refer to the below article for software tokens(Sophos Central Intercept X Maintenance Release).
https://support.sophos.com/support/s/article/KB-000038477?language=en_US
Please refer to the below article for Update management policy.
https://docs.sophos.com/central/Customer/help/en-us/ManageYourProducts/EndpointProtection/ConfigureUpdatingPolicy/index.html
https://doc.sophos.com/central/Customer/help/en-us/ManageYourProducts/Policies/EditPolicies/index.html