I have an address table that is offset to a fixed address.

It would be beneficial to have the option to add an address to those offsets shown in the screenshot.

In this case, the offset is $9200, and the first entry should become 9200+174 = $9374

I went through this by making labels for offset addresses, assigning them in Edit Data Operand, and using the label as Symbolic Reference. Lots of manual work could be avoided with modification in the Format Address Table tool.