Hello. Thank you for contacting the Toolset support.
Well - Types supports one option to rewrite the post type slug. There is rewrite option available with CPT:
=> Edit your post type
=> Navigate to "Options" section
=> Under Rewrite option - click on "Use a custom URL format" and you can add your custom slug there.
I hope that above option will fulfill your requirement. If above option does not work , following are a few links, which may help you achieving this, please have a look:
Well - I do not have any issue to guide you. I've couple of ways that may help you.
1)
You may try to disable the has_archive from your custom post type settings and create a page that works as your post type archive where you should list the content using views.
Also, I will file a discuss this with our Dev team to include a feature request that rewrite rule should also be applicable to post type archive not only posts.