Yes you can enter planned TSS:
If you create a future WO in the calendar and enter the expected TSS under “Load” it is reflected in the fitness graph.
And thanks for pointing to intervals.icu, it saved me a lot of money by not having to subscribe to TP 
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Link broken, can I ask you please re-upload it?
Thank you in advance
I’ve updated the original post with a working link.
( http://e.pc.cd/PCpy6alK )
Mike
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It says deleted by owner.
I’ll have to have a look into that.
Updated the original post again:
Mike
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