Subtitle offset chromecast remote control

[jbg]

I may be missing something obvious, in that case I am sorry. I have tried to search Google, the old subreddit and the forum but found no matching topics.

I use the latest Jellyfin app on an Android phone (OnePlus 5T) in order to cast to my Chromecasts around the house. In the app I am able to use subtitle offsetting by tapping the "settings" cog during playback. However, when I am in the "remote control" mode while casting the media to a Chromecast, there is no such option anywhere to be found. Is this simply not an available feature?

Hoping I am just blind and/or stupid, since I generally have to offset subtitles 75% of the time in order to have a good watching experience.

Thanks in advance!