To use Interactive Sorting, right-click on the column header and view Text Box Properties.
Click on the Interactive Sorting tab and check the Enable Interactive Sorting box.
Normally you would use Detail Row but you can also specify to use a Group instead.
Put the field or expression that you want to sort by in the Sort By expression.
You need to do the same for any additional columns you wish to sort.
As to your data, the field you have would be sorted as text and not a number. This works for the data that you have listed but may cause issues when you have versions in the double digits. A sorted list would order a list like:
- 1.15
- 10.5
- 2.33
- 3.2
- 9.1
If this is a potential issue, you would need to figure out a way to deal with it. You could use an expression that adds zeroes to the first number to deal with this:
=RIGHT("000" & LEFT(FIELDS!Version.VALUE, INSTR(FIELDS!Version.VALUE) - 1) & MID(FIELDS!Version.VALUE, INSTR(FIELDS!Version.VALUE) + 1, LEN(FIELDS!Version.VALUE))
For more info:
Interactive sorting In SSRS on Values - Matrix report