OK, here is how you may be able to do it.
I do not know proteus - I am doing this in CADSTAR so I may use some terms that are different in Proteus - but I am sure the feature will be there just named differently.
1) Transfer your design to a PCB where you have a ratsnest of connected components.
Note - your components need to be PTH on 0.1" pitch.
2) Make a documentation/figure layer and on this layer draw some figures that represent the vero board i.e.
This is all figures and I have set the figures/layer so that it is all fixed and I cannot select it.
3) Place your components in positions on the fake vero board, consider the rats nest connections (yellow) to be the vero tracks.
having the rats nest makes this a lot easier to figure out where the connections should be.
4) Route your tracks (bottom layer) - consider that they can only go in straight lines and that you need a hole to be able to have a gap between different nets.
Where you are going to need a jumper, via up to the top lay - along and then back down again - this will be replaced with a jumper wire.
I have set all track widths to 50 thou to imitate the vero tracks.
5) Add some markers to indicate where you need a track cut - these can be anything - I have used a simple figure (yellow rectangles with hole in).
6) Copy all this to the vero board, cut your tracks, sit back and admire your ingenuity.
Think outside of the box - just because a CAD package is meant to make high tech designs - does not mean that it cannot be used for simple old tech, you just get to use some of the new tech features to get there.
I have circa £50k of PCB CAD package at my disposal and never imagined that I would use it to do this.
Go on - have a go :grin: