help optimoptions
optimoptions  Create/modify optimization options
For a list
    of valid optimization solvers, enter
      doc optimoptions

OPTIONS = optimoptions(SOLVER,'PARAM1',VALUE1,...) creates default
    optimization options for SOLVER with the named parameters altered with
    the specified values. OPTIONS can also be created using optimoptions
    and setting the parameters via dot notation. For example:

% Create and set parameters using optimoptions
    options = optimoptions('fminunc','StepTolerance',0.01,'Display','iter')
 
    % Create same options using optimoptions and dot notation
    options = optimoptions('fminunc'); 
    options.StepTolerance = 0.01;
    options.Display = 'iter'

rng default
x = optimvar('x',3,'LowerBound',0);
expr = x'*(eye(3) + randn(3))*x - randn(1,3)*x;
prob = optimproblem('Objective',expr);
options = optimoptions(prob)