different notes appearance

Hi,
why do I sometimes have different notes appearance?
For example 3 eighth notes together and the fourth notated separately? (see image 1) …
And the other is, I would like to have a note of 3 beats (half + dot), but sometimes I get half note + quarter note tied together (see image 2). how do I adjust them to my preference? …

thank you in advance
2.png
1.png

They’re covered by different options in Notation Option > Note Grouping. Set global rules there and use Force Duration to override locally, where necessary.

It would also help to know the time signature of the examples.

thx,
Yes sorry it’s 4/4 …
but i did it all and i also watched this video https://blog.dorico.com/2020/03/tip-force-the-duration-of-notes /, but it doesn’t work with what I do …
ezgif-2-d76d57fc94be.gif
1.gif

For the attachment named “ezgif-2-d76”… you also need to make sure that this Notation Option is set correctly:

For your attachment named “1.gif” what happens if you select the passage, right-click > Beaming > Reset Beaming?

OMG you are incredible … hahaha

many thanks again, Everything works perfectly !!!