In IDI, I used A Rule like this:

In PS, I don't see how to include the "-" character in the Rename Rule when building the Rule in the Design view... So what I did was switch to the "Text" view of the rule in IDI, and Copy/paste into the Text view of the Rule in PS...

However, in IDI, there is also a "Settings" tab for the Rule - and that has an "Always make file names unique" checkbox. There does not seem to be an equivalent Settings tab in PS. I rely on that setting to ensure that multiple shots taken in a one second period are given unique names.
How can I do this?
Thanks.