Adding ballast weight?

Recently bought a Instinct (Tactical) and I'm very happy with this piece of technology. 
Probably this is not the first time someone asks but I couldn't find the topic on this forum:

It would be a nice feature if you could add the extra weight you're carrying with you while hiking (field: rucking weight). 
Not specific for calorie burning because that's measured via heart beat etc. but for monitoring your progress over time via reporting. 

Before you start a hike you could put in or overwrite the extra weight in a field or just confirm the 'default' weight you've put in via the profile? 

I often hike with different ballast. Morning 10Kg Afternoon 25Kg evening 0 Kg. Would be nice if the watch asks you before starting an activity if 25kg is ok and then scroll up/down to change it. 

If this feature is already available please guide me. Couldn't find it in the manual or any YT video


Thanks for reading and replying!

Best hiking greet,
Brian