you want to add new lines to your existing access-list,right? Then,
if your IOS is newer than 12.2(14)S you can use sequence umbering feature. You can check that your IOS supports this feature with sh access-list 1 command. If that command output is like this :
10 deny ip host 10.200.11.13 any
20 deny ip host 10.200.119.12 any
the numbers at beginning of each line are sequnce number. so you can easily add your new lines with sequence numbers (shows where to put the lines) to the existing access-list. otherwise (if your IOS doesn't support this feauture), you have to copy access-list to a text-editor and make your changes, remove access-list from router with "no access-list 1" command and then paste new access-list back to router...
for the feature above you can check the document below:
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...