How to drag multiple durations with sequencer overlay

Hi there,
Today is my first day with Notion and I love it. No more complicated setup of multiple sound libraries like I've always had to do in Sibelius.
However, there is something I'd love to know how to do but can't figure it out.
I've got a Clarinet part (which to my ears sounds the best in Miroslav rather than the Notion 3 sounds or EastWest, which I also have). However, there are sections where it needs to sound smoother (like all the notes are in one breath rather than separate breaths for each note). I have put a slur over the notes and this doesn't make it sound any different.
I've found I can get the effect I want if I push TAB and make the sequencer overlay the stave. If I drag each note duration out a little longer with the 'MIDI' bar into the next note it helps things sound smoother. However, I don't want to do this for each note in a phrase, I want to do it for multiple notes. However, I can't figure out how to select multiple notes, and drag their durations for them all at once.
If anyone knows the solution to my problem that'd be great. Alternatively, if there are any other tips to 'humanise' the performance that'd be much appreciated.
Kind regards, Duncan
Today is my first day with Notion and I love it. No more complicated setup of multiple sound libraries like I've always had to do in Sibelius.
However, there is something I'd love to know how to do but can't figure it out.
I've got a Clarinet part (which to my ears sounds the best in Miroslav rather than the Notion 3 sounds or EastWest, which I also have). However, there are sections where it needs to sound smoother (like all the notes are in one breath rather than separate breaths for each note). I have put a slur over the notes and this doesn't make it sound any different.
I've found I can get the effect I want if I push TAB and make the sequencer overlay the stave. If I drag each note duration out a little longer with the 'MIDI' bar into the next note it helps things sound smoother. However, I don't want to do this for each note in a phrase, I want to do it for multiple notes. However, I can't figure out how to select multiple notes, and drag their durations for them all at once.
If anyone knows the solution to my problem that'd be great. Alternatively, if there are any other tips to 'humanise' the performance that'd be much appreciated.
Kind regards, Duncan