Tracking activities...

I don’t add my steps and I take lots. I find if I do, I over estimate my burn and eat more.

I’m not trying to lose but I’m also not trying to gain

I have my activity level set to sedentary and I use an activity tracker. If I exceed sedentary level according to my tracker (steps or other movement such as housework), I get extra calories. If, on rare occasions, I don't reach sedentary level, calories are deducted from my goal.
I eat all of those extra calories my tracker gives me and it works for me.

Just make sure you aren't double counting eg. setting a high activity level in MFP because you walk around at work and then adding those steps as exercise as well.

What do you mean the app is set to allow more calories for steps?

Do you have a Fitbit or something linked to mfp?

Or do you mean in setting your activity level on mfp (using a step count as a rough guide)?

If you have a Fitbit linked to the app, don’t add anything else to mfp (for exercise/activity).

Your “steps” adjustment includes all the calories you’ve burned from all your activity during the day-your work, your workouts, running after kids, grocery shopping-whatever you did. It’s not an adjustment for steps. It’s an adjustment to account t for all the calories you burned over and above whatever your setting is on mfp.

The steps are shown so you can see if the amount/sync happened recently (meaning if mfp says 1678 steps and your Fitbit says 18k, then they need to sync).

But when it does sync-it will include everything.

So you’re covered as is. You don’t need to add anything. That’s just going to complicate things for no reason (the calories are already there).