Question Samsung Galaxy Tab A 2019 SM-T290 Apps button

Dec 5, 2019
8
1
15
Having just got this new tablet, I find that the apps icon only brings up a limited selection of apps. How do I get to see all my apps using this button?
 
Dec 5, 2019
8
1
15
ok I have looked at the manual, all 112 pages of it, but it doesn't answer my question. Interestingly it shows the app screen with only a few apps showing.

My apps screen shows only 15 apps, but the device has many more loaded. I cant figure out how to get them all to show.
 
Dec 5, 2019
8
1
15
What I have just noticed, if I list all apps in settings - apps; the ones that show themselves in the apps window have a spline type mark associated with them (like settings icon)