The SUFFIX for a document is the last part of its file name.
Please go to Document settings
Add Prefixes/Suffixes
Suffixes >> Choose the document type for which you want to add Suffix.
You can choose the suffix from the existing ones or add a new one
To add a new one, Add Suffix >> Type input for Suffix >> Select default prefix(if required) >> submit
You can make the newly added suffix as default by enabling default toggle
While creating document, suffix which is selected as default will be automatically added as document suffix.
