show all tasks impacted from start to finish for multiple tasks

here is what to do instead of look to see the logic to see which task are the sucessors I suggest that you start at the end and look for the predecessor that are driving you and running you late. 

creat a new code call it tracking and give it a code value of track

add this code as a column

in the relationships tab on the predecessors left hand right click and select customize predecessor columns and expand the general category can bring over the critical and driving as columns in the predecessor window.

only filter for ONE ACTIVITY which is the last actvity that is running late in the group that you are looking for 

go to the activity that you want to track now look at this predcessor and look for the activity that has both the driving AND the critical box checked cllick on that predecesor now at the bottom click GOTO

keep doing this by tracking back the driving and criticla predecessor with you get back to the data date or the activity that is already completed.

this is your drive for that activity

now in the coulumn that you just added called tracking click on the first activity and select the new code TRACK

now do a fill down for this column 

now you and filter for this column

If you have another activity that you want to track just add a new value TRACK1 and do the same thing.