Allegro PCB Design Tips
You can always place or move a component using mouse and which snaps the component following the grids. However, many times you need to place or move the component at an exact XY coordiante location.
To place a component at an exact XY location go to Plcae -> Manually -> and then select the component. Bring the component to the drawing pan. Now go to the commamd widow and type the command
x x1 y1
where x1 and y1 are the coordinate where you want to place the component.
You can also move the component to an exact location using Edit -> Move -> In FInd make sure symbol is selected. Now select the component and in the command section give the command
x x1 y1
To move only in the x axis direction, give the command
x x1
To move only in the y Axis direction give the command
y y1
Where y1 is thw y coordinate where you want to move the component.
This youtube captures the whole sequence.