Bitrate Adobe Captivate

I have the recomended setting for producing files for Udemy. H.264 1920×1080 @ 10 Mb/s 1280×720 @ 5 Mb/s HEVC 1920×1080 @ 6 Mb/s 1280×720 @ 3 Mb/s In exporting the files I can only see single digit settings for target bitrate and maximum bitrate. What do these number relate to and if I set to maxium am I Ok. I am completely new to video.