I'm not sure of your exact antenna / guy design but a simple way to erect a HF dipole on your own where the guys attach near the top of the pole is:
1) Peg the ends of the two dipole legs, leaving some slack in the wire, with the pole flat on the ground in the centre.
2) "Walk" your pole into a near vertical position whilst holding the third guy line & feeder against the pole. This should pull the dipole legs fairly taut.
3) Walk away from the pole with the third guy line making sure you keep the dipole legs taut & the pole should remain almost vertical.
4) Peg the third guy line to maintain a stable arrangement, connect the feeder to your radio & away you go!
This 3-leg arrangement is what I used with my 160m dipole so it should work easier with with smaller HF antennas. The video below shows this antenna in the final stages of being set up to give you an idea of what I refer to. I seem to remember a good video Richard G3CWI posted showing a similar set up for an end fed half wave.
Best of luck with the activations!
73, Mark G0VOF