The following might help.

This is an exciting month, for we look forward in anticipation to receiving our chosen roses from the supplier. The first task on their arrival should be to remove the wrapping from the bare-rooted plants, and stand the roots in water for 24 hours to give them a drink after their long journey. Prepare plants the holes before bringing the roses into the planting area, and keep roots sheltered from sun and wind to prevent drying out. Mix a couple of handfuls of compost with the soil and put about 2 inches (5 cms.) in the hole. Take the rose, and after making a small mound in the bottom of the hole, spread the roots out and over the mound. Take a small stick an place it across the hole at ground level. Ensure that the union of understock and hybrid will be at ground level when planting is complete. Remove or add soil to facilitate this. Half fill the hole with soil and firm the rose into the hole. Run a half bucket of water into the hole, and allow to drain. This helps to eradicate air pockets from around the roots, which can contribute to a slow start for the rose. Finally, top up the hole with soil, spread animal manure (I prefer fowl) aroung the plant ensuring that it is kept a couple of inches away from the union.
Standard roses are planted in the same way, but must be supported by a stake to keep stem straight. Before beginning to plant, drive the stake into the base of the hole, then proceed as for bush roses. I prefer velkro for ties for standards. Place one tie as high as possible and at least another one further down to keep the stem straight.